00:02
Hi, in this question we have to calculate the ph of buffer.
00:04
Now, weak acid of this buffer is h -o -b -r.
00:11
Now, h -o -b -r will give h -a -p -p -r -n -e -r negative.
00:22
Now, this is the conjugate base of this acid here.
00:29
And now, n -a -o -b -r is the salt, and this salt will give the n -a -o -b -r -aquis, and it will give n -a -o -b -r -aquess, and it will give n -a -p -a -p -a -p -r -n -a -v -r -n -a -v -r.
00:52
Now, these are the, this is the conjugate base of h -o -b -r.
01:02
So now concentration of o br negative, that is conjugate base is equal to concentration of salt given, that is equal to 0 .060 molar.
01:16
And now concentration of this weak acid is equal to 0 .080 molar.
01:24
Now, ka of this weak acid is this...